Based on the inputs from ICAO, and in coordination with the AEEC IPS and RTCA SC-223 activities, EUROCAE WG-108 will determine what exactly is needed to ensure the deployment of ATN/IPS. In particular, ICAO will standardize the needed features for ATN/IPS such as Security, Addressing, Mobility… This will require providing guidance to ensure a consistent end-to-end deployment. The guidance document will ensure that the ATN/IPS deployment answers to the need in terms for safety, security and performance.